1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
|
/* audit.c - GnuPG's audit subsystem
* Copyright (C) 2007, 2009 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <assert.h>
#include "util.h"
#include "i18n.h"
#include "audit.h"
#include "audit-events.h"
/* A list to maintain a list of helptags. */
struct helptag_s
{
struct helptag_s *next;
const char *name;
};
typedef struct helptag_s *helptag_t;
/* One log entry. */
struct log_item_s
{
audit_event_t event; /* The event. */
gpg_error_t err; /* The logged error code. */
int intvalue; /* A logged integer value. */
char *string; /* A malloced string or NULL. */
ksba_cert_t cert; /* A certifciate or NULL. */
int have_err:1;
int have_intvalue:1;
};
typedef struct log_item_s *log_item_t;
/* The main audit object. */
struct audit_ctx_s
{
const char *failure; /* If set a description of the internal failure. */
audit_type_t type;
log_item_t log; /* The table with the log entries. */
size_t logsize; /* The allocated size for LOG. */
size_t logused; /* The used size of LOG. */
estream_t outstream; /* The current output stream. */
int use_html; /* The output shall be HTML formatted. */
int indentlevel; /* Current level of indentation. */
helptag_t helptags; /* List of help keys. */
};
static void writeout_para (audit_ctx_t ctx,
const char *format, ...) JNLIB_GCC_A_PRINTF(2,3);
static void writeout_li (audit_ctx_t ctx, const char *oktext,
const char *format, ...) JNLIB_GCC_A_PRINTF(3,4);
static void writeout_rem (audit_ctx_t ctx,
const char *format, ...) JNLIB_GCC_A_PRINTF(2,3);
/* Add NAME to the list of help tags. NAME needs to be a const string
an this function merly stores this pointer. */
static void
add_helptag (audit_ctx_t ctx, const char *name)
{
helptag_t item;
for (item=ctx->helptags; item; item = item->next)
if (!strcmp (item->name, name))
return; /* Already in the list. */
item = xtrycalloc (1, sizeof *item);
if (!item)
return; /* Don't care about memory problems. */
item->name = name;
item->next = ctx->helptags;
ctx->helptags = item;
}
/* Remove all help tags from the context. */
static void
clear_helptags (audit_ctx_t ctx)
{
while (ctx->helptags)
{
helptag_t tmp = ctx->helptags->next;
xfree (ctx->helptags);
ctx->helptags = tmp;
}
}
static const char *
event2str (audit_event_t event)
{
/* We need the cast so that compiler does not complain about an
always true comparison (>= 0) for an unsigned value. */
int idx = eventstr_msgidxof ((int)event);
if (idx == -1)
return "Unknown event";
else
return eventstr_msgstr + eventstr_msgidx[idx];
}
/* Create a new audit context. In case of an error NULL is returned
and errno set appropriately. */
audit_ctx_t
audit_new (void)
{
audit_ctx_t ctx;
ctx = xtrycalloc (1, sizeof *ctx);
return ctx;
}
/* Release an audit context. Passing NULL for CTX is allowed and does
nothing. */
void
audit_release (audit_ctx_t ctx)
{
int idx;
if (!ctx)
return;
if (ctx->log)
{
for (idx=0; idx < ctx->logused; idx++)
{
if (ctx->log[idx].string)
xfree (ctx->log[idx].string);
if (ctx->log[idx].cert)
ksba_cert_release (ctx->log[idx].cert);
}
xfree (ctx->log);
}
clear_helptags (ctx);
xfree (ctx);
}
/* Set the type for the audit operation. If CTX is NULL, this is a
dummy fucntion. */
void
audit_set_type (audit_ctx_t ctx, audit_type_t type)
{
if (!ctx || ctx->failure)
return; /* Audit not enabled or an internal error has occurred. */
if (ctx->type && ctx->type != type)
{
ctx->failure = "conflict in type initialization";
return;
}
ctx->type = type;
}
/* Create a new log item and put it into the table. Return that log
item on success; return NULL on memory failure and mark that in
CTX. */
static log_item_t
create_log_item (audit_ctx_t ctx)
{
log_item_t item, table;
size_t size;
if (!ctx->log)
{
size = 10;
table = xtrymalloc (size * sizeof *table);
if (!table)
{
ctx->failure = "Out of memory in create_log_item";
return NULL;
}
ctx->log = table;
ctx->logsize = size;
item = ctx->log + 0;
ctx->logused = 1;
}
else if (ctx->logused >= ctx->logsize)
{
size = ctx->logsize + 10;
table = xtryrealloc (ctx->log, size * sizeof *table);
if (!table)
{
ctx->failure = "Out of memory while reallocating in create_log_item";
return NULL;
}
ctx->log = table;
ctx->logsize = size;
item = ctx->log + ctx->logused++;
}
else
item = ctx->log + ctx->logused++;
item->event = AUDIT_NULL_EVENT;
item->err = 0;
item->have_err = 0;
item->intvalue = 0;
item->have_intvalue = 0;
item->string = NULL;
item->cert = NULL;
return item;
}
/* Add a new event to the audit log. If CTX is NULL, this function
does nothing. */
void
audit_log (audit_ctx_t ctx, audit_event_t event)
{
log_item_t item;
if (!ctx || ctx->failure)
return; /* Audit not enabled or an internal error has occurred. */
if (!event)
{
ctx->failure = "Invalid event passed to audit_log";
return;
}
if (!(item = create_log_item (ctx)))
return;
item->event = event;
}
/* Add a new event to the audit log. If CTX is NULL, this function
does nothing. This version also adds the result of the operation
to the log. */
void
audit_log_ok (audit_ctx_t ctx, audit_event_t event, gpg_error_t err)
{
log_item_t item;
if (!ctx || ctx->failure)
return; /* Audit not enabled or an internal error has occurred. */
if (!event)
{
ctx->failure = "Invalid event passed to audit_log_ok";
return;
}
if (!(item = create_log_item (ctx)))
return;
item->event = event;
item->err = err;
item->have_err = 1;
}
/* Add a new event to the audit log. If CTX is NULL, this function
does nothing. This version also add the integer VALUE to the log. */
void
audit_log_i (audit_ctx_t ctx, audit_event_t event, int value)
{
log_item_t item;
if (!ctx || ctx->failure)
return; /* Audit not enabled or an internal error has occurred. */
if (!event)
{
ctx->failure = "Invalid event passed to audit_log_i";
return;
}
if (!(item = create_log_item (ctx)))
return;
item->event = event;
item->intvalue = value;
item->have_intvalue = 1;
}
/* Add a new event to the audit log. If CTX is NULL, this function
does nothing. This version also add the integer VALUE to the log. */
void
audit_log_s (audit_ctx_t ctx, audit_event_t event, const char *value)
{
log_item_t item;
char *tmp;
if (!ctx || ctx->failure)
return; /* Audit not enabled or an internal error has occurred. */
if (!event)
{
ctx->failure = "Invalid event passed to audit_log_s";
return;
}
tmp = xtrystrdup (value? value : "");
if (!tmp)
{
ctx->failure = "Out of memory in audit_event";
return;
}
if (!(item = create_log_item (ctx)))
{
xfree (tmp);
return;
}
item->event = event;
item->string = tmp;
}
/* Add a new event to the audit log. If CTX is NULL, this function
does nothing. This version also adds the certificate CERT and the
result of an operation to the log. */
void
audit_log_cert (audit_ctx_t ctx, audit_event_t event,
ksba_cert_t cert, gpg_error_t err)
{
log_item_t item;
if (!ctx || ctx->failure)
return; /* Audit not enabled or an internal error has occurred. */
if (!event)
{
ctx->failure = "Invalid event passed to audit_log_cert";
return;
}
if (!(item = create_log_item (ctx)))
return;
item->event = event;
item->err = err;
item->have_err = 1;
if (cert)
{
ksba_cert_ref (cert);
item->cert = cert;
}
}
/* Write TEXT to the outstream. */
static void
writeout (audit_ctx_t ctx, const char *text)
{
if (ctx->use_html)
{
for (; *text; text++)
{
if (*text == '<')
es_fputs ("<", ctx->outstream);
else if (*text == '&')
es_fputs ("&", ctx->outstream);
else
es_putc (*text, ctx->outstream);
}
}
else
es_fputs (text, ctx->outstream);
}
/* Write TEXT to the outstream using a variable argument list. */
static void
writeout_v (audit_ctx_t ctx, const char *format, va_list arg_ptr)
{
char *buf;
estream_vasprintf (&buf, format, arg_ptr);
if (buf)
{
writeout (ctx, buf);
xfree (buf);
}
else
writeout (ctx, "[!!Out of core!!]");
}
/* Write TEXT as a paragraph. */
static void
writeout_para (audit_ctx_t ctx, const char *format, ...)
{
va_list arg_ptr;
if (ctx->use_html)
es_fputs ("<p>", ctx->outstream);
va_start (arg_ptr, format) ;
writeout_v (ctx, format, arg_ptr);
va_end (arg_ptr);
if (ctx->use_html)
es_fputs ("</p>\n", ctx->outstream);
else
es_fputc ('\n', ctx->outstream);
}
static void
enter_li (audit_ctx_t ctx)
{
if (ctx->use_html)
{
if (!ctx->indentlevel)
{
es_fputs ("<table border=\"0\">\n"
" <colgroup>\n"
" <col width=\"80%\" />\n"
" <col width=\"20%\" />\n"
" </colgroup>\n",
ctx->outstream);
}
}
ctx->indentlevel++;
}
static void
leave_li (audit_ctx_t ctx)
{
ctx->indentlevel--;
if (ctx->use_html)
{
if (!ctx->indentlevel)
es_fputs ("</table>\n", ctx->outstream);
}
}
/* Write TEXT as a list element. If OKTEXT is not NULL, append it to
the last line. */
static void
writeout_li (audit_ctx_t ctx, const char *oktext, const char *format, ...)
{
va_list arg_ptr;
const char *color = NULL;
if (ctx->use_html && format && oktext)
{
if (!strcmp (oktext, "Yes")
|| !strcmp (oktext, "good") )
color = "green";
else if (!strcmp (oktext, "No")
|| !strcmp (oktext, "bad") )
color = "red";
}
if (format && oktext)
{
const char *s = NULL;
if (!strcmp (oktext, "Yes"))
oktext = _("Yes");
else if (!strcmp (oktext, "No"))
oktext = _("No");
else if (!strcmp (oktext, "good"))
{
/* TRANSLATORS: Copy the prefix between the vertical bars
verbatim. It will not be printed. */
oktext = _("|audit-log-result|Good");
}
else if (!strcmp (oktext, "bad"))
oktext = _("|audit-log-result|Bad");
else if (!strcmp (oktext, "unsupported"))
oktext = _("|audit-log-result|Not supported");
else if (!strcmp (oktext, "no-cert"))
oktext = _("|audit-log-result|No certificate");
else if (!strcmp (oktext, "disabled"))
oktext = _("|audit-log-result|Not enabled");
else if (!strcmp (oktext, "error"))
oktext = _("|audit-log-result|Error");
else if (!strcmp (oktext, "not-used"))
oktext = _("|audit-log-result|Not used");
else if (!strcmp (oktext, "okay"))
oktext = _("|audit-log-result|Okay");
else if (!strcmp (oktext, "skipped"))
oktext = _("|audit-log-result|Skipped");
else if (!strcmp (oktext, "some"))
oktext = _("|audit-log-result|Some");
else
s = "";
/* If we have set a prefix, skip it. */
if (!s && *oktext == '|' && (s=strchr (oktext+1,'|')))
oktext = s+1;
}
if (ctx->use_html)
{
int i;
es_fputs (" <tr><td><table><tr><td>", ctx->outstream);
if (color)
es_fprintf (ctx->outstream, "<font color=\"%s\">*</font>", color);
else
es_fputs ("*", ctx->outstream);
for (i=1; i < ctx->indentlevel; i++)
es_fputs (" ", ctx->outstream);
es_fputs ("</td><td>", ctx->outstream);
}
else
es_fprintf (ctx->outstream, "* %*s", (ctx->indentlevel-1)*2, "");
if (format)
{
va_start (arg_ptr, format) ;
writeout_v (ctx, format, arg_ptr);
va_end (arg_ptr);
}
if (ctx->use_html)
es_fputs ("</td></tr></table>", ctx->outstream);
if (format && oktext)
{
if (ctx->use_html)
{
es_fputs ("</td><td>", ctx->outstream);
if (color)
es_fprintf (ctx->outstream, "<font color=\"%s\">", color);
}
else
writeout (ctx, ": ");
writeout (ctx, oktext);
if (color)
es_fputs ("</font>", ctx->outstream);
}
if (ctx->use_html)
es_fputs ("</td></tr>\n", ctx->outstream);
else
es_fputc ('\n', ctx->outstream);
}
/* Write a remark line. */
static void
writeout_rem (audit_ctx_t ctx, const char *format, ...)
{
va_list arg_ptr;
if (ctx->use_html)
{
int i;
es_fputs (" <tr><td><table><tr><td>*", ctx->outstream);
for (i=1; i < ctx->indentlevel; i++)
es_fputs (" ", ctx->outstream);
es_fputs (" </td><td> (", ctx->outstream);
}
else
es_fprintf (ctx->outstream, "* %*s (", (ctx->indentlevel-1)*2, "");
if (format)
{
va_start (arg_ptr, format) ;
writeout_v (ctx, format, arg_ptr);
va_end (arg_ptr);
}
if (ctx->use_html)
es_fputs (")</td></tr></table></td></tr>\n", ctx->outstream);
else
es_fputs (")\n", ctx->outstream);
}
/* Return the first log item for EVENT. If STOPEVENT is not 0 never
look behind that event in the log. If STARTITEM is not NULL start
search _after_that item. */
static log_item_t
find_next_log_item (audit_ctx_t ctx, log_item_t startitem,
audit_event_t event, audit_event_t stopevent)
{
int idx;
for (idx=0; idx < ctx->logused; idx++)
{
if (startitem)
{
if (ctx->log + idx == startitem)
startitem = NULL;
}
else if (stopevent && ctx->log[idx].event == stopevent)
break;
else if (ctx->log[idx].event == event)
return ctx->log + idx;
}
return NULL;
}
static log_item_t
find_log_item (audit_ctx_t ctx, audit_event_t event, audit_event_t stopevent)
{
return find_next_log_item (ctx, NULL, event, stopevent);
}
/* Helper to a format a serial number. */
static char *
format_serial (ksba_const_sexp_t sn)
{
const char *p = (const char *)sn;
unsigned long n;
char *endp;
if (!p)
return NULL;
if (*p != '(')
BUG (); /* Not a valid S-expression. */
n = strtoul (p+1, &endp, 10);
p = endp;
if (*p != ':')
BUG (); /* Not a valid S-expression. */
return bin2hex (p+1, n, NULL);
}
/* Return a malloced string with the serial number and the issuer DN
of the certificate. */
static char *
get_cert_name (ksba_cert_t cert)
{
char *result;
ksba_sexp_t sn;
char *issuer, *p;
if (!cert)
return xtrystrdup ("[no certificate]");
issuer = ksba_cert_get_issuer (cert, 0);
sn = ksba_cert_get_serial (cert);
if (issuer && sn)
{
p = format_serial (sn);
if (!p)
result = xtrystrdup ("[invalid S/N]");
else
{
result = xtrymalloc (strlen (p) + strlen (issuer) + 2 + 1);
if (result)
{
*result = '#';
strcpy (stpcpy (stpcpy (result+1, p),"/"), issuer);
}
xfree (p);
}
}
else
result = xtrystrdup ("[missing S/N or issuer]");
ksba_free (sn);
xfree (issuer);
return result;
}
/* Return a malloced string with the serial number and the issuer DN
of the certificate. */
static char *
get_cert_subject (ksba_cert_t cert, int idx)
{
char *result;
char *subject;
if (!cert)
return xtrystrdup ("[no certificate]");
subject = ksba_cert_get_subject (cert, idx);
if (subject)
{
result = xtrymalloc (strlen (subject) + 1 + 1);
if (result)
{
*result = '/';
strcpy (result+1, subject);
}
}
else
result = NULL;
xfree (subject);
return result;
}
/* List the given certificiate. If CERT is NULL, this is a NOP. */
static void
list_cert (audit_ctx_t ctx, ksba_cert_t cert, int with_subj)
{
char *name;
int idx;
name = get_cert_name (cert);
writeout_rem (ctx, "%s", name);
xfree (name);
if (with_subj)
{
enter_li (ctx);
for (idx=0; (name = get_cert_subject (cert, idx)); idx++)
{
writeout_rem (ctx, "%s", name);
xfree (name);
}
leave_li (ctx);
}
}
/* List the chain of certificates from STARTITEM up to STOPEVENT. The
certifcates are written out as comments. */
static void
list_certchain (audit_ctx_t ctx, log_item_t startitem, audit_event_t stopevent)
{
log_item_t item;
startitem = find_next_log_item (ctx, startitem, AUDIT_CHAIN_BEGIN,stopevent);
writeout_li (ctx, startitem? "Yes":"No", _("Certificate chain available"));
if (!startitem)
return;
item = find_next_log_item (ctx, startitem,
AUDIT_CHAIN_ROOTCERT, AUDIT_CHAIN_END);
if (!item)
writeout_rem (ctx, "%s", _("root certificate missing"));
else
{
list_cert (ctx, item->cert, 0);
}
item = startitem;
while ( ((item = find_next_log_item (ctx, item,
AUDIT_CHAIN_CERT, AUDIT_CHAIN_END))))
{
list_cert (ctx, item->cert, 1);
}
}
/* Process an encrypt operation's log. */
static void
proc_type_encrypt (audit_ctx_t ctx)
{
log_item_t loopitem, item;
int recp_no, idx;
char numbuf[35];
int algo;
char *name;
item = find_log_item (ctx, AUDIT_ENCRYPTION_DONE, 0);
writeout_li (ctx, item?"Yes":"No", "%s", _("Data encryption succeeded"));
enter_li (ctx);
item = find_log_item (ctx, AUDIT_GOT_DATA, 0);
writeout_li (ctx, item? "Yes":"No", "%s", _("Data available"));
item = find_log_item (ctx, AUDIT_SESSION_KEY, 0);
writeout_li (ctx, item? "Yes":"No", "%s", _("Session key created"));
if (item)
{
algo = gcry_cipher_map_name (item->string);
if (algo)
writeout_rem (ctx, _("algorithm: %s"), gcry_cipher_algo_name (algo));
else if (item->string && !strcmp (item->string, "1.2.840.113549.3.2"))
writeout_rem (ctx, _("unsupported algorithm: %s"), "RC2");
else if (item->string)
writeout_rem (ctx, _("unsupported algorithm: %s"), item->string);
else
writeout_rem (ctx, _("seems to be not encrypted"));
}
item = find_log_item (ctx, AUDIT_GOT_RECIPIENTS, 0);
snprintf (numbuf, sizeof numbuf, "%d",
item && item->have_intvalue? item->intvalue : 0);
writeout_li (ctx, numbuf, "%s", _("Number of recipients"));
/* Loop over all recipients. */
loopitem = NULL;
recp_no = 0;
while ((loopitem=find_next_log_item (ctx, loopitem, AUDIT_ENCRYPTED_TO, 0)))
{
recp_no++;
writeout_li (ctx, NULL, _("Recipient %d"), recp_no);
if (loopitem->cert)
{
name = get_cert_name (loopitem->cert);
writeout_rem (ctx, "%s", name);
xfree (name);
enter_li (ctx);
for (idx=0; (name = get_cert_subject (loopitem->cert, idx)); idx++)
{
writeout_rem (ctx, "%s", name);
xfree (name);
}
leave_li (ctx);
}
}
leave_li (ctx);
}
/* Process a sign operation's log. */
static void
proc_type_sign (audit_ctx_t ctx)
{
log_item_t item, loopitem;
int signer, idx;
const char *result;
ksba_cert_t cert;
char *name;
int lastalgo;
item = find_log_item (ctx, AUDIT_SIGNING_DONE, 0);
writeout_li (ctx, item?"Yes":"No", "%s", _("Data signing succeeded"));
enter_li (ctx);
item = find_log_item (ctx, AUDIT_GOT_DATA, 0);
writeout_li (ctx, item? "Yes":"No", "%s", _("Data available"));
/* Write remarks with the data hash algorithms. We use a very
simple scheme to avoid some duplicates. */
loopitem = NULL;
lastalgo = 0;
while ((loopitem = find_next_log_item
(ctx, loopitem, AUDIT_DATA_HASH_ALGO, AUDIT_NEW_SIG)))
{
if (loopitem->intvalue && loopitem->intvalue != lastalgo)
writeout_rem (ctx, _("data hash algorithm: %s"),
gcry_md_algo_name (loopitem->intvalue));
lastalgo = loopitem->intvalue;
}
/* Loop over all signer. */
loopitem = NULL;
signer = 0;
while ((loopitem=find_next_log_item (ctx, loopitem, AUDIT_NEW_SIG, 0)))
{
signer++;
item = find_next_log_item (ctx, loopitem, AUDIT_SIGNED_BY, AUDIT_NEW_SIG);
if (!item)
result = "error";
else if (!item->err)
result = "okay";
else if (gpg_err_code (item->err) == GPG_ERR_CANCELED)
result = "skipped";
else
result = gpg_strerror (item->err);
cert = item? item->cert : NULL;
writeout_li (ctx, result, _("Signer %d"), signer);
item = find_next_log_item (ctx, loopitem,
AUDIT_ATTR_HASH_ALGO, AUDIT_NEW_SIG);
if (item)
writeout_rem (ctx, _("attr hash algorithm: %s"),
gcry_md_algo_name (item->intvalue));
if (cert)
{
name = get_cert_name (cert);
writeout_rem (ctx, "%s", name);
xfree (name);
enter_li (ctx);
for (idx=0; (name = get_cert_subject (cert, idx)); idx++)
{
writeout_rem (ctx, "%s", name);
xfree (name);
}
leave_li (ctx);
}
}
leave_li (ctx);
}
/* Process a decrypt operation's log. */
static void
proc_type_decrypt (audit_ctx_t ctx)
{
log_item_t loopitem, item;
int algo, recpno;
char *name;
char numbuf[35];
int idx;
item = find_log_item (ctx, AUDIT_DECRYPTION_RESULT, 0);
writeout_li (ctx, item && !item->err?"Yes":"No",
"%s", _("Data decryption succeeded"));
enter_li (ctx);
item = find_log_item (ctx, AUDIT_GOT_DATA, 0);
writeout_li (ctx, item? "Yes":"No", "%s", _("Data available"));
item = find_log_item (ctx, AUDIT_DATA_CIPHER_ALGO, 0);
algo = item? item->intvalue : 0;
writeout_li (ctx, algo?"Yes":"No", "%s", _("Encryption algorithm supported"));
if (algo)
writeout_rem (ctx, _("algorithm: %s"), gcry_cipher_algo_name (algo));
item = find_log_item (ctx, AUDIT_BAD_DATA_CIPHER_ALGO, 0);
if (item && item->string)
{
algo = gcry_cipher_map_name (item->string);
if (algo)
writeout_rem (ctx, _("algorithm: %s"), gcry_cipher_algo_name (algo));
else if (item->string && !strcmp (item->string, "1.2.840.113549.3.2"))
writeout_rem (ctx, _("unsupported algorithm: %s"), "RC2");
else if (item->string)
writeout_rem (ctx, _("unsupported algorithm: %s"), item->string);
else
writeout_rem (ctx, _("seems to be not encrypted"));
}
for (recpno = 0, item = NULL;
(item = find_next_log_item (ctx, item, AUDIT_NEW_RECP, 0)); recpno++)
;
snprintf (numbuf, sizeof numbuf, "%d", recpno);
writeout_li (ctx, numbuf, "%s", _("Number of recipients"));
/* Loop over all recipients. */
loopitem = NULL;
while ((loopitem = find_next_log_item (ctx, loopitem, AUDIT_NEW_RECP, 0)))
{
const char *result;
recpno = loopitem->have_intvalue? loopitem->intvalue : -1;
item = find_next_log_item (ctx, loopitem,
AUDIT_RECP_RESULT, AUDIT_NEW_RECP);
if (!item)
result = "not-used";
else if (!item->err)
result = "okay";
else if (gpg_err_code (item->err) == GPG_ERR_CANCELED)
result = "skipped";
else
result = gpg_strerror (item->err);
item = find_next_log_item (ctx, loopitem,
AUDIT_RECP_NAME, AUDIT_NEW_RECP);
writeout_li (ctx, result, _("Recipient %d"), recpno);
if (item && item->string)
writeout_rem (ctx, "%s", item->string);
/* If we have a certificate write out more infos. */
item = find_next_log_item (ctx, loopitem,
AUDIT_SAVE_CERT, AUDIT_NEW_RECP);
if (item && item->cert)
{
enter_li (ctx);
for (idx=0; (name = get_cert_subject (item->cert, idx)); idx++)
{
writeout_rem (ctx, "%s", name);
xfree (name);
}
leave_li (ctx);
}
}
leave_li (ctx);
}
/* Process a verification operation's log. */
static void
proc_type_verify (audit_ctx_t ctx)
{
log_item_t loopitem, item;
int signo, count, idx, n_good, n_bad;
char numbuf[35];
const char *result;
/* If there is at least one signature status we claim that the
verification succeeded. This does not mean that the data has
verified okay. */
item = find_log_item (ctx, AUDIT_SIG_STATUS, 0);
writeout_li (ctx, item?"Yes":"No", "%s", _("Data verification succeeded"));
enter_li (ctx);
item = find_log_item (ctx, AUDIT_GOT_DATA, AUDIT_NEW_SIG);
writeout_li (ctx, item? "Yes":"No", "%s", _("Data available"));
if (!item)
goto leave;
item = find_log_item (ctx, AUDIT_NEW_SIG, 0);
writeout_li (ctx, item? "Yes":"No", "%s", _("Signature available"));
if (!item)
goto leave;
/* Print info about the used data hashing algorithms. */
for (idx=0, n_good=n_bad=0; idx < ctx->logused; idx++)
{
item = ctx->log + idx;
if (item->event == AUDIT_NEW_SIG)
break;
else if (item->event == AUDIT_DATA_HASH_ALGO)
n_good++;
else if (item->event == AUDIT_BAD_DATA_HASH_ALGO)
n_bad++;
}
item = find_log_item (ctx, AUDIT_DATA_HASHING, AUDIT_NEW_SIG);
if (!item || item->err || !n_good)
result = "No";
else if (n_good && !n_bad)
result = "Yes";
else
result = "Some";
writeout_li (ctx, result, "%s", _("Parsing data succeeded"));
if (n_good || n_bad)
{
for (idx=0; idx < ctx->logused; idx++)
{
item = ctx->log + idx;
if (item->event == AUDIT_NEW_SIG)
break;
else if (item->event == AUDIT_DATA_HASH_ALGO)
writeout_rem (ctx, _("data hash algorithm: %s"),
gcry_md_algo_name (item->intvalue));
else if (item->event == AUDIT_BAD_DATA_HASH_ALGO)
writeout_rem (ctx, _("bad data hash algorithm: %s"),
item->string? item->string:"?");
}
}
/* Loop over all signatures. */
loopitem = find_log_item (ctx, AUDIT_NEW_SIG, 0);
assert (loopitem);
do
{
signo = loopitem->have_intvalue? loopitem->intvalue : -1;
item = find_next_log_item (ctx, loopitem,
AUDIT_SIG_STATUS, AUDIT_NEW_SIG);
writeout_li (ctx, item? item->string:"?", _("Signature %d"), signo);
item = find_next_log_item (ctx, loopitem,
AUDIT_SIG_NAME, AUDIT_NEW_SIG);
if (item)
writeout_rem (ctx, "%s", item->string);
item = find_next_log_item (ctx, loopitem,
AUDIT_DATA_HASH_ALGO, AUDIT_NEW_SIG);
if (item)
writeout_rem (ctx, _("data hash algorithm: %s"),
gcry_md_algo_name (item->intvalue));
item = find_next_log_item (ctx, loopitem,
AUDIT_ATTR_HASH_ALGO, AUDIT_NEW_SIG);
if (item)
writeout_rem (ctx, _("attr hash algorithm: %s"),
gcry_md_algo_name (item->intvalue));
enter_li (ctx);
/* List the certificate chain. */
list_certchain (ctx, loopitem, AUDIT_NEW_SIG);
/* Show the result of the chain validation. */
item = find_next_log_item (ctx, loopitem,
AUDIT_CHAIN_STATUS, AUDIT_NEW_SIG);
if (item && item->have_err)
{
writeout_li (ctx, item->err? "No":"Yes",
_("Certificate chain valid"));
if (item->err)
writeout_rem (ctx, "%s", gpg_strerror (item->err));
}
/* Show whether the root certificate is fine. */
item = find_next_log_item (ctx, loopitem,
AUDIT_ROOT_TRUSTED, AUDIT_CHAIN_STATUS);
if (item)
{
writeout_li (ctx, item->err?"No":"Yes", "%s",
_("Root certificate trustworthy"));
if (item->err)
{
add_helptag (ctx, "gpgsm.root-cert-not-trusted");
writeout_rem (ctx, "%s", gpg_strerror (item->err));
list_cert (ctx, item->cert, 0);
}
}
/* Show result of the CRL/OCSP check. */
item = find_next_log_item (ctx, loopitem,
AUDIT_CRL_CHECK, AUDIT_NEW_SIG);
if (item)
{
const char *ok;
switch (gpg_err_code (item->err))
{
case 0: ok = "good"; break;
case GPG_ERR_CERT_REVOKED: ok = "bad"; break;
case GPG_ERR_NOT_ENABLED: ok = "disabled"; break;
case GPG_ERR_NO_CRL_KNOWN:
ok = _("no CRL found for certificate");
break;
case GPG_ERR_CRL_TOO_OLD:
ok = _("the available CRL is too old");
break;
default: ok = gpg_strerror (item->err); break;
}
writeout_li (ctx, ok, "%s", _("CRL/OCSP check of certificates"));
if (item->err
&& gpg_err_code (item->err) != GPG_ERR_CERT_REVOKED
&& gpg_err_code (item->err) != GPG_ERR_NOT_ENABLED)
add_helptag (ctx, "gpgsm.crl-problem");
}
leave_li (ctx);
}
while ((loopitem = find_next_log_item (ctx, loopitem, AUDIT_NEW_SIG, 0)));
leave:
/* Always list the certificates stored in the signature. */
item = NULL;
count = 0;
while ( ((item = find_next_log_item (ctx, item,
AUDIT_SAVE_CERT, AUDIT_NEW_SIG))))
count++;
snprintf (numbuf, sizeof numbuf, "%d", count);
writeout_li (ctx, numbuf, _("Included certificates"));
item = NULL;
while ( ((item = find_next_log_item (ctx, item,
AUDIT_SAVE_CERT, AUDIT_NEW_SIG))))
{
char *name = get_cert_name (item->cert);
writeout_rem (ctx, "%s", name);
xfree (name);
enter_li (ctx);
for (idx=0; (name = get_cert_subject (item->cert, idx)); idx++)
{
writeout_rem (ctx, "%s", name);
xfree (name);
}
leave_li (ctx);
}
leave_li (ctx);
}
/* Print the formatted audit result. THIS IS WORK IN PROGRESS. */
void
audit_print_result (audit_ctx_t ctx, estream_t out, int use_html)
{
int idx;
size_t n;
log_item_t item;
helptag_t helptag;
const char *s;
int show_raw = 0;
char *orig_codeset;
if (!ctx)
return;
orig_codeset = i18n_switchto_utf8 ();
/* We use an environment variable to include some debug info in the
log. */
if ((s = getenv ("gnupg_debug_audit")))
show_raw = 1;
assert (!ctx->outstream);
ctx->outstream = out;
ctx->use_html = use_html;
ctx->indentlevel = 0;
clear_helptags (ctx);
if (use_html)
es_fputs ("<div class=\"GnuPGAuditLog\">\n", ctx->outstream);
if (!ctx->log || !ctx->logused)
{
writeout_para (ctx, _("No audit log entries."));
goto leave;
}
if (show_raw)
{
int maxlen;
for (idx=0,maxlen=0; idx < DIM (eventstr_msgidx); idx++)
{
n = strlen (eventstr_msgstr + eventstr_msgidx[idx]);
if (n > maxlen)
maxlen = n;
}
if (use_html)
es_fputs ("<pre>\n", out);
for (idx=0; idx < ctx->logused; idx++)
{
es_fprintf (out, "log: %-*s",
maxlen, event2str (ctx->log[idx].event));
if (ctx->log[idx].have_intvalue)
es_fprintf (out, " i=%d", ctx->log[idx].intvalue);
if (ctx->log[idx].string)
{
es_fputs (" s=`", out);
writeout (ctx, ctx->log[idx].string);
es_fputs ("'", out);
}
if (ctx->log[idx].cert)
es_fprintf (out, " has_cert");
if (ctx->log[idx].have_err)
{
es_fputs (" err=`", out);
writeout (ctx, gpg_strerror (ctx->log[idx].err));
es_fputs ("'", out);
}
es_fputs ("\n", out);
}
if (use_html)
es_fputs ("</pre>\n", out);
else
es_fputs ("\n", out);
}
enter_li (ctx);
switch (ctx->type)
{
case AUDIT_TYPE_NONE:
writeout_li (ctx, NULL, _("Unknown operation"));
break;
case AUDIT_TYPE_ENCRYPT:
proc_type_encrypt (ctx);
break;
case AUDIT_TYPE_SIGN:
proc_type_sign (ctx);
break;
case AUDIT_TYPE_DECRYPT:
proc_type_decrypt (ctx);
break;
case AUDIT_TYPE_VERIFY:
proc_type_verify (ctx);
break;
}
item = find_log_item (ctx, AUDIT_AGENT_READY, 0);
if (item && item->have_err)
{
writeout_li (ctx, item->err? "No":"Yes", "%s", _("Gpg-Agent usable"));
if (item->err)
{
writeout_rem (ctx, "%s", gpg_strerror (item->err));
add_helptag (ctx, "gnupg.agent-problem");
}
}
item = find_log_item (ctx, AUDIT_DIRMNGR_READY, 0);
if (item && item->have_err)
{
writeout_li (ctx, item->err? "No":"Yes", "%s", _("Dirmngr usable"));
if (item->err)
{
writeout_rem (ctx, "%s", gpg_strerror (item->err));
add_helptag (ctx, "gnupg.dirmngr-problem");
}
}
leave_li (ctx);
/* Show the help from the collected help tags. */
if (ctx->helptags)
{
if (use_html)
{
es_fputs ("<hr/>\n", ctx->outstream);
if (ctx->helptags->next)
es_fputs ("<ul>\n", ctx->outstream);
}
else
es_fputs ("\n\n", ctx->outstream);
}
for (helptag = ctx->helptags; helptag; helptag = helptag->next)
{
char *text;
if (use_html && ctx->helptags->next)
es_fputs ("<li>\n", ctx->outstream);
text = gnupg_get_help_string (helptag->name, 0);
if (text)
{
writeout_para (ctx, "%s", text);
xfree (text);
}
else
writeout_para (ctx, _("No help available for `%s'."), helptag->name);
if (use_html && ctx->helptags->next)
es_fputs ("</li>\n", ctx->outstream);
if (helptag->next)
es_fputs ("\n", ctx->outstream);
}
if (use_html && ctx->helptags && ctx->helptags->next)
es_fputs ("</ul>\n", ctx->outstream);
leave:
if (use_html)
es_fputs ("</div>\n", ctx->outstream);
ctx->outstream = NULL;
ctx->use_html = 0;
clear_helptags (ctx);
i18n_switchback (orig_codeset);
}
|